%% Listing 4-7	while statement example
 A = floor(rand(1,10)*100) 
 theMax = A(1);            
 theIndex = 1;
 index = 1;                
 while index <= length(A)  
     x = A(index);		   	
     if x > theMax         
         theMax = x;
         theIndex = index;        
     end
     index = index + 1;	  
 end
 fprintf('the max value in A is %d at %d\n', ...
             theMax, theIndex);
